This is just a pre season friendly match. We have seen Manchester United performed very good in pre season matches in the past and crumbled during the season. It's good that they have won two premier league teams in their pre season matches, but hope they can win them where it matters. I would prefer them losing in the friendly matches and win in the league matches against these two teams they have played so far.
I do not want to compare with other teams, but sometimes during the preseason a team shows very good performance in friendly matches, scores a lot of goals, but when the official season starts, they are unable to play, score very little, and so on. What I want to say is that nonofficial games and everything we see in the preseason should not be taken as something encouraging regarding Manchester United. For now, I do not believe that Amorim, by making just a few transfers, can change the team so drastically. So yes, it is good that they are winning, but we need to wait for the season to start.